#ifndef MEM_H
#define MEM_H

static inline void memcpy(void * dest, const void * src, size_t n)
{
    uint32_t r0, r1, r2;
    __asm__ __volatile__ (
            "cld\n\t"
            "rep movsb"
            : "=&c" (r0), "=&S" (r1), "=&D" (r2)
            : "2" (dest), "1" (src), "0" (n)
            : "memory");
}

static inline void memcpy32(void * dest, const void * src, size_t count)
{
    uint32_t r0, r1, r2;
    __asm__ __volatile__ (
            "cld\n\t"
            "rep movsd"
            : "=&c" (r0), "=&S" (r1), "=&D" (r2)
            : "2" (dest), "1" (src), "0" (count)
            : "memory");
}

static inline void * memmove(void * dest, const void * src, size_t count)
{
    return __builtin_memmove(dest, src, count);
}

static inline void * memset(void * dest, int val, size_t count)
{
    return __builtin_memset(dest, val, count);
}

static inline void memset32(void * dest, uint32_t val, size_t count)
{
    uint32_t r0, r1;
    __asm__ __volatile__ (
            "cld\n\t"
            "rep stosl"
            : "=&c" (r0), "=&D" (r1)
            : "a" (val), "1" (dest), "0" (count)
            : "memory");
}

#endif